CA Patent

CA2384679A1 — Using quaternary ammonium salts for transdermal drug delivery

Assigned to Allergan Finance LLC · Expires 2001-03-15 · 25y expired

What this patent protects

A transdermal drug delivery system is disclosed, which includes a polymer, a drug and an amount of a quaternary ammonium salt that is sufficient to act as a penetration enhancer. The quaternary ammonium salt may also be present in an amount sufficient to act as an irritation redu…

USPTO Abstract

A transdermal drug delivery system is disclosed, which includes a polymer, a drug and an amount of a quaternary ammonium salt that is sufficient to act as a penetration enhancer. The quaternary ammonium salt may also be present in an amount sufficient to act as an irritation reducer. Further, the transdermal drug delivery system may also contain a co-enhancer, which provides a synergistic skin permeation enhancing effect when combined with the quaternary ammonium salt. A method for enhancing the transdermal delivery of a drug is also disclosed.

Drugs covered by this patent

Patent Metadata

Patent number
CA2384679A1
Jurisdiction
CA
Classification
—
Expires
2001-03-15
Drug substance claim
No
Drug product claim
No
Assignee
Allergan Finance LLC
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

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